mirror of https://github.com/k3s-io/k3s
99 lines
3.2 KiB
Go
99 lines
3.2 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package upgrades
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import (
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/test/e2e/framework"
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. "github.com/onsi/ginkgo"
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)
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// PersistentVolumeUpgradeTest test that a pv is available before and after a cluster upgrade.
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type PersistentVolumeUpgradeTest struct {
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pvSource *v1.PersistentVolumeSource
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pv *v1.PersistentVolume
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pvc *v1.PersistentVolumeClaim
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}
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const (
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pvTestFile string = "/mnt/pv_upgrade_test"
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pvTestData string = "keep it pv"
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pvWriteCmd string = "echo \"" + pvTestData + "\" > " + pvTestFile
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pvReadCmd string = "cat " + pvTestFile
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)
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func (t *PersistentVolumeUpgradeTest) createGCEVolume() *v1.PersistentVolumeSource {
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diskName, err := framework.CreatePDWithRetry()
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framework.ExpectNoError(err)
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return &v1.PersistentVolumeSource{
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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: diskName,
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FSType: "ext3",
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ReadOnly: false,
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},
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}
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}
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func (t *PersistentVolumeUpgradeTest) deleteGCEVolume(pvSource *v1.PersistentVolumeSource) {
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framework.DeletePDWithRetry(pvSource.GCEPersistentDisk.PDName)
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}
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// Setup creates a pv and then verifies that a pod can consume it. The pod writes data to the volume.
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func (t *PersistentVolumeUpgradeTest) Setup(f *framework.Framework) {
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// TODO: generalize this to other providers
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framework.SkipUnlessProviderIs("gce", "gke")
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ns := f.Namespace.Name
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By("Initializing PV source")
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t.pvSource = t.createGCEVolume()
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pvConfig := framework.PersistentVolumeConfig{
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NamePrefix: "pv-upgrade",
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PVSource: *t.pvSource,
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Prebind: nil,
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}
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By("Creating the PV and PVC")
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t.pv, t.pvc = framework.CreatePVPVC(f.ClientSet, pvConfig, ns, true)
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framework.WaitOnPVandPVC(f.ClientSet, ns, t.pv, t.pvc)
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By("Consuming the PV before upgrade")
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t.testPod(f, pvWriteCmd+";"+pvReadCmd)
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}
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// Test waits for the upgrade to complete, and then verifies that a pod can still consume the pv
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// and that the volume data persists.
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func (t *PersistentVolumeUpgradeTest) Test(f *framework.Framework, done <-chan struct{}, upgrade UpgradeType) {
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<-done
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By("Consuming the PV after upgrade")
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t.testPod(f, pvReadCmd)
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}
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// Teardown cleans up any remaining resources.
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func (t *PersistentVolumeUpgradeTest) Teardown(f *framework.Framework) {
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framework.PVPVCCleanup(f.ClientSet, f.Namespace.Name, t.pv, t.pvc)
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t.deleteGCEVolume(t.pvSource)
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}
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// testPod creates a pod that consumes a pv and prints it out. The output is then verified.
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func (t *PersistentVolumeUpgradeTest) testPod(f *framework.Framework, cmd string) {
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pod := framework.MakePod(f.Namespace.Name, t.pvc.Name, false, cmd)
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expectedOutput := []string{pvTestData}
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f.TestContainerOutput("pod consumes pv", pod, 0, expectedOutput)
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}
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